Μ-led, µ-led device, display and method for the same
AssigneeOSRAM Opto Semiconductors GmbH
InventorsPeter BRICK, Jean-Jacques DROLET, Hubert HALBRITTER, Laura KREINER, Thomas SCHWARZ, Julia STOLZ
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Abstract
The invention relates to various aspects of a μ-LED or a μ-LED array for augmented reality or lighting applications, in particular in the automotive field. The μ-LED is characterized by particularly small dimensions in the range of a few μm.
Claims30
μ-LED arrangement for generating a pixel of a display, comprising
- a flat carrier substrate;
- and
- at least three μ-LED, which are arranged on a mounting side of the carrier substrate
- wherein the at least three μ-LED are adapted to emit light of different color transverse to a carrier substrate plane in a direction away from the carrier substrate;
- a flat reflector element;
- wherein the reflector element is spatially arranged on the assembly side relative to the at least three μ-LED and is configured to reflect light emitted by the at least three μ-LED in the direction of the carrier substrate;
- wherein the carrier substrate is at least partially transparent so that light reflected from the reflector element propagates through the carrier substrate and emerges at a display side of the carrier substrate opposite the mounting side.
μ-LED arrangement comprising a μ-LED and a Converter element arranged on a μ-LED, the converter element comprising at least one layer comprising a converter material which, when excited by an incident excitation radiation by the μ-LEd, emits a converted radiation into an emission region,
- characterized in that the layer comprises a quasi-periodic photonic structure or a deterministically aperiodic photonic structure in which the converter material is arranged at least in sections of the structure and which is configured in such a way that the radiation is emitted as a directed beam of rays into the emission area.
μ-LED arrangement, comprising:
- an arrangement comprising a plurality of μ-LEDs for generating light emerging from a light exit surface from the optoelectronic device, and
- at least one photonic structure arranged between the light-emitting surface and the plurality of μ-LEDs.
Arrangement comprising:
- μ-LED arrangement for generating a pixel of a display, comprising
- a flat carrier substrate;
- and
- at least three μ-LED, which are arranged on a mounting side of the carrier substrate
- wherein the at least three μ-LED are adapted to emit light of different color transverse to a carrier substrate plane in a direction away from the carrier substrate;
- a flat reflector element;
- wherein the reflector element is spatially arranged on the assembly side relative to the at least three μ-LED and is configured to reflect light emitted by the at least three μ-LED in the direction of the carrier substrate;
- wherein the carrier substrate is at least partially transparent so that light reflected from the reflector element propagates through the carrier substrate and emerges at a display side of the carrier substrate opposite the mounting side;
- wherein
- a photonic structure is incorporated in or on the carrier substrate, which first and second regions with different refractive indexes, whereas converter material forms one of the first and second region and is configured in such a way that the radiation is emitted as a directed beam of rays.
Dependencies are inferred from the claim text.